Effect of ground granulate blast-furnace slag on corrosion performance of steel embedded in concrete

The effect of sodium hydroxide (NaOH) and polycarboxylate superplasticizer amount on over-sulfur phosphogypsum–ground granulate blast-furnace slag cement was investigated. The mechanical performances and hydration mechanism of the cement with different proportions of NaOH and polycarboxylate superplasticizer (BASF) were analyzed based on setting time, the additive quantity of water, strength test, XRD and SEM analyses. The results showed that the polycarboxylate superplasticizer, can increase the densification and the strength of the cement ,to improve the performance of the cement anti-carbonation properties. NaOH as an alkali activator significantly reduces the cement setting time and improves the cement early strength. But the acceleration of hydration process produces coarse crystalline hydration products and the osteoporosis structure of hardened paste, which has a negative effect on long term strength.

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An experimental study on corrosion resistance of concrete with ground granulate blast-furnace slag

Cement and Concrete Research ◽

10.1016/j.cemconres.2004.11.010 ◽

2005 ◽

Vol 35 (7) ◽

pp. 1391-1399 ◽

Cited By ~ 93

Author(s):

Kyong Yun Yeau ◽

Eun Kyum Kim

Keyword(s):

Experimental Study ◽

Corrosion Resistance ◽

Blast Furnace ◽

Blast Furnace Slag ◽

Granulate Blast Furnace Slag ◽

Furnace Slag

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Anti-corrosion performance and microstructure analysis on a marine concrete utilizing coal combustion byproducts and blast furnace slag

Clean Technologies and Environmental Policy ◽

10.1007/s10098-013-0654-y ◽

2013 ◽

Vol 16 (3) ◽

pp. 545-554 ◽

Cited By ~ 5

Author(s):

Yuan Yao ◽

Jin Kang Gong ◽

Zengdi Cui

Keyword(s):

Blast Furnace ◽

Coal Combustion ◽

Blast Furnace Slag ◽

Microstructure Analysis ◽

Corrosion Performance ◽

Marine Concrete ◽

Furnace Slag

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A Study on the Long-term Durability of High-Volume Ground Granulate Blast Furnace Slag Cement Concrete for 41years

Concrete Research and Technology ◽

10.3151/crt.30.77 ◽

2019 ◽

Vol 30 (0) ◽

pp. 77-84

Author(s):

Manabu Hashimoto ◽

Kazuhide Kurata ◽

Yusuke Ohtsuka ◽

Yasuhiro Dan

Keyword(s):

Blast Furnace ◽

Blast Furnace Slag ◽

High Volume ◽

Cement Concrete ◽

Slag Cement ◽

Granulate Blast Furnace Slag ◽

Furnace Slag

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Effect of Phosphogypsum on the Properties of Over-Sulfur Phosphogypsum–Ground Granulate Blast-Furnace Slag Cement

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.638-640.1453 ◽

2014 ◽

Vol 638-640 ◽

pp. 1453-1459

Author(s):

Zhi Jiang Lv ◽

Zong Shou Lin ◽

Hao Jie Wang

Keyword(s):

Blast Furnace ◽

Blast Furnace Slag ◽

Setting Time ◽

Steel Slag ◽

Cement Clinker ◽

Strength Deterioration ◽

Volume Stability ◽

Granulate Blast Furnace Slag ◽

Mechanical Performances ◽

Furnace Slag

Over-sulfur phosphogypsum(PG)–ground granulate blast-furnace slag(GGBFS) cement paste is utilized by GGBFS, Portland cement clinker(PCC), additive, water and modificated phosphogypsum paste(MPG), produced by milling PG mixed with a certain proportion of steel slag(SS), GGBFS and water. The effect of PG on the properties of over-sulfur PG– GGBFS cement was investigated. The mechanical performances and hydration mechanism of the cement with different kinds, proportions and particle size of PG were analyzed based on setting time, volume stability, strength test, XRD and SEM analyses. The experimental results show that,the optimum mixture of PG amount in the binder was 45%. Overdose of PG may caused strength deterioration. The optimum grinding time of MPG in the binder was 20min. The soluble phosphorus content of PG in the binder was under 0.05%.

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